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Spotting a Mojave Desert tortoise is increasingly difficult in the American Southwest. The tortoises, with their unmistakable domed patterned shells, live in California, parts of Nevada, Arizona and ...

The four hatchlings are eating and putting on weight before their public debut on April 23. Their clutch included 12 other eggs, which have yet to hatch. Philadelphia Zoo The world’s population of ...

After a female tortoise is fertilized, she undergoes several changes. After mating, the female tortoise will carry eggs for weeks to months, depending on the species. As the female tortoise gets ...

One nearly century-old tortoise has been a fixture of the Philadelphia Zoo since 1932 — and now she’s living up to her name. Mommy, the estimated 97-year-old Western Santa Cruz Galapagos tortoise, ...

Artificial incubation has led to the first successful hatching of Aldabra Giant Tortoises in the Seychelles, following groundbreaking research that revealed their low hatching success in the wild was ...

A pair of Western Santa Cruz Galápagos tortoises, who are estimated to be around a century old, have become parents for the first time at the Philadelphia Zoo. The arrival of four hatchlings to "Mommy ...